Ore-feeder



(No Model.)

HEPJHOLLAND.

ORE FEEDER.

Patented Mar, 10, 1896.

UNITED STATES PATENT OFFICE.

HENRY P. HOLLAND, OF OAKLAND, CALIFORNIA.

ORE-FEEDER.

SPECIFICATION forming part of Letters Patent No. 556,188, dated March 10, 1896. Application filed June 13, 1895. Serial No. 552,'729. (No model.)

T0 on whom, it may concern:

Be it known that I, HENRY P. HOLLAND, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Ore-Feeders; and I do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to ore-feeders; and it consists in the novel construction and arrangement of the parts whereby ore is fed to a stamp mill or oven with any degree of rapidity as desired.

In the drawings, Figure 1 is a side elevation of this invention, showing it as operating in the mouth of the hopper and delivering the ore into the retort of a furnace. Fig. 2 is a front elevation of the same. Fig. 3 is a detail View in plan of the swinging frame. Fig. 4 is a detail view in plan of the rotary shovel.

This invention operates in conjunction with the ordinary feed hopper or chute which is provided with the platform Y and the supplemental chute Y \Vhen in operation the rotating shovel is thrown forward over the platform Y until its scoop-shaped blades extend into the mouth of the hopperY, as shown in Fig. 1. In this position the lower end of the shaft A carrying the rotary shovel A rests just above the platform Y. In this position it is supported in trunnioned guides A and A. At the top it is provided with the convex-shaped friction-drum A Resting upon said convex drum A is the friction-drum B, which is loosely mounted on the driving-shaft B The motive power is applied to this orefeeder through the pulley B shaft B and drums B and A The drum B is thrown into action by means of the clutch B which is operated by the hand-lever B the end of which extends down to within grasp of the operator.

The shaft A, as above mentioned, is supported in the trunnioned guides A A. The trunnions of these guides are carried in the journaled boxes A and A the latter of which is stationary, being securely bolted to the extension X of the frame. The j ournal-box A is movable in and out to throw the rotary shovel to and from the mouth of the hopper Y. To accomplish this the said journal-box is mounted upon the tracks X X of the swinging frame X X and is provided rigidly attached there to with the threaded screw A the threads of which engage a suitable threaded perforation in the front of the frame X X The screw A is provided on its outer end with the spoked hand-wheel A by means of which it is turned. The said screw is provided with the large lock-nut A to set the screw rigidly in position.

The meeting faces of the drums A are formed in section to a line struck from a center taken on the center of the stationary trunnions A". The face of the drum B is concaved to conform to the convex shape of the drum A By means of this construction the shaft A may be swung around on the trunnions A while maintaining the frictional contact between the said drums. In its operation the rotary shovel A is driven in the direction as shown by arrow at Fig. 1. The scoop-shaped shovels enter the mouth of the hopper Y, and each takes its proportion and carries it around over the table Y and delivers it into the chute Y to the furnace or mill. The quantity delivered, it will be observed, depends on the distance to which the shovels A are introduced into the mouth of the hopper Y. This distance may be regulated by throwing the lower end of the shaft A in or out by means of the screw A so the quantity handled is within control of the operator.

When it is desired to use this feeder in connection with a stamp-mill, the pulley B is substituted by a pawl and ratchet, whereby when the stamps fall the shaft A is turned a predetermined distance and delivers the necessary amount of ore to the mill.

The frame X, X, X X and X may be of any suitable material and made in any desired form. That shown in the drawings is constructed of an gle-iron and is supported on four uprights X.

Having thus described this invention, what I claim is- 1. In an ore-feeder such as described the combination with a rotary shovel provided with scoop-shaped blades adapted to extend into the mouth of ahopper or chute, of a mechanism to rotate said shovel, a shaft connecting the said shovel and driving mechanism and pivotally mounted in the frame of the feeder, and suitable guides for the said shaft adapted to be advanced and receded to insert the rotary shovel into the mouth of the hopper or chute substantially as described.

2. In an ore-feeder such as described the combination with a rotary shovel provided with scoop-shaped blades adapted to extend into the mouth of a hopper or chute, of a shaft for the said shovel pivotally mounted in the frame of the feeder and provided with a convex-shaped friction-d rum the face of which is curved from the center of the pivotal bearing of the shaft, a driving mechanism to rotate said shaft having a friction-drum to impinge upon the convex drum on the said shaft, and suitable guides for the said shaft adapted to be advanced and receded to insert the rotary shovel into the mouth of the hopper or chute substantially as described.

In an ore-feeder such as described the combination with the rotary shovel A provided with scoop-shaped blades adapted to extend into the mouth of a hopper or chute of a mechanism to rotate said shovel, a shaft for the said shovel mounted in trunnioncd guides A A the latter of which is stationary and supports the said shaft, the journalbox A adapted to receive the trunnions A and mounted in the swinging frame X, and suitable devices attaehcd to the said swinging frame and engaging the said journal-box to advance and recede the same substantially as described.

In testimony whereof I have hereunto set my hand this 1st day of June, 1895.

HENRY P. HOLLAND. \Vitnesses:

J. M. NoUeUns, Jr., CHAS. J. Aimin-ws'rnu. 

